Home / 5,281.28-7,926.60-2,685.68

Finding the Fourth Proportional to 5,281.28, 7,926.60 and 2,685.68

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Solution

The fourth proportional to 5,281.28, 7,926.60 and 2,685.68 is: 4,030.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.28 : 7,926.60 = 2,685.68 : x
  2. Step 2: Convert to fraction form
    5,281.28/7,926.60 = 2,685.68/x
  3. Step 3: Cross multiply
    5,281.28x = 7,926.60 × 2,685.68
  4. Step 4: Simplify right side
    5,281.28x = 21,288,311.09
  5. Step 5: Solve for x
    x = 21,288,311.09/5,281.28
  6. Step 6: Final answer
    x = 4,030.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.